[TenTec] Need advice about OVP for 262G

[James Duffer]

Assuming a stepdown ratio of 10:1 of your transformer, for 4 amps in the primary (input) we would have 40 amps in the secondary.  That might be too much and would have damaged something before the 4 amp would open.

73, Jim wd4air

> ----- Original Message ----- 
> From: "Hulett, Russell" <rhulett1 at consolidated.net>
> To: <tentec at contesting.com>
> Sent: Wednesday, April 01, 2009 9:22 AM
> Subject: Re: [TenTec] Need advice about OVP for 262G
> 
> 
> > Evidently several years ago, someone suggested installing a 1.5KE15A 
> > transient suppression diode with a fuse at the PS output.  This seems like 
> > a simple solution to me compared to SCRs, added circuits etc.  One 
> > question, since these diodes will clamp, thus protecting the load ( my 
> > Triton IV ) why won't the 4A slow blow on the transformer input do the 
> > job.
> >
> > I'm thinking of building the zener and an in-line fuseholder into the 
> > cable between the 262G and the 540.  That's to avoid modifying either the 
> > power supply or the radio.  Wonder if anyone else has used that approach, 
> > and whether I'm missing something crucial.
> >
> > 73, Curt KB5JO
> 
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